View SYNTHROID savings options available to you including Manufacturer Coupons, Rx Advantage Savings Card, Canadian Prescription Savings or SYNTHROID Patient Assistance Program.

Programs are suitable for individuals who want to buy SYNTHROID without insurance, with insurance or for those who are underinsured. You can pay as little as $0 per fill.*

Manufactured by AbbVie Inc.

*Applicable to Drug Coupons & Patient Assistance Programs

This content is intended for US audiences only

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    Save up to 90%

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    Drug Coupons

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Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

Learn more about SYNTHROID



SYNTHROID is the brand name for levothyroxine and is available as an oral tablet.

What dosages is SYNTHROID available in?

What dosages is SYNTHROID available in?

SYNTHROID is available as a 25 mcg, 50 mcg, 75 mcg, 88 mcg, 100 mcg, 112 mcg, 125 mcg, 137 mcg, 150 mcg, 175 mcg, 200 mcg, and 300 mcg oral tablet.

What is SYNTHROID used for?

What is SYNTHROID used for?

SYNTHROID is a thyroxine (T4) and is used to treat the following:

  • Hypothyroidism (low thyroid hormone levels)
  • Thyroid cancer (in combination with radiation and surgery)
How does SYNTHROID work?

How does SYNTHROID work?

SYNTHROID is a man-made version of the T4 thyroid hormone made by your thyroid gland. Thyroid hormones have important functions like controlling metabolism, body temperature, heart rate, and more. When the amount of hormone is too low, taking thyroid replacement hormones can bring your levels back to normal.

How do I take SYNTHROID?

How do I take SYNTHROID?

Your provider will calculate your dose of SYNTHROID based on different factors, such as your age, medical condition, and level of thyroid hormone. The typical dose of SYNTHROID ranges from 13 mcg to 200 mcg taken by mouth once daily on an empty stomach.

Is it safe for me to take SYNTHROID?

Is it safe for me to take SYNTHROID?

SYNTHROID is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have uncorrected adrenal insufficiency.

SYNTHROID Common Side Effects

SYNTHROID Common Side Effects

Common side effects of SYNTHROID:

  • Side effects are rare and are typically related to too much thyroid hormone
SYNTHROID Serious Side Effects

SYNTHROID Serious Side Effects

Serious side effects are rare with SYNTHROID. Contact your healthcare provider immediately if you experience any of the following.

  • Heart failure: trouble breathing, weakness, tiredness, swelling in the hands, ankles, and feet
  • Heart attack: dizziness, lightheadedness, anxiety, trouble breathing, fast heartbeat, nausea, cold sweat, clammy skin, chest pain or tightness
Effects of other drugs, drug classes and over-the-counter products on SYNTHROID

Effects of other drugs, drug classes and over-the-counter products on SYNTHROID

The following medications may interact with SYNTHROID:

  • See full prescribing information for drugs that affect thyroid hormone pharmacokinetics and metabolism (e.g., absorption, synthesis, secretion catabolism, protein binding, and target tissue response) and may alter the therapeutic response to SYNTHROID
Who makes SYNTHROID?

Who makes SYNTHROID?

AbbVie Inc.

Is SYNTHROID safe in pregnancy?

Is SYNTHROID safe in pregnancy?

Pregnancy may require the use of higher doses of SYNTHROID. You should notify your healthcare provider if you become pregnant while taking SYNTHROID.


What to do if you missed your SYNTHROID dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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